6628449536 has 36 divisors (see below), whose sum is σ = 13237301700. Its totient is φ = 3312648192.

The previous prime is 6628449533. The next prime is 6628449539. The reversal of 6628449536 is 6359448266.

It is an interprime number because it is at equal distance from previous prime (6628449533) and next prime (6628449539).

It can be written as a sum of positive squares in 2 ways, for example, as 3609606400 + 3018843136 = 60080^2 + 54944^2 .

It is a hoax number, since the sum of its digits (53) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6628449533) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 683570 + ... + 693198.

It is an arithmetic number, because the mean of its divisors is an integer number (367702825).

Almost surely, 2^6628449536 is an apocalyptic number.

It is an amenable number.

6628449536 is a deficient number, since it is larger than the sum of its proper divisors (6608852164).

6628449536 is an equidigital number, since it uses as much as digits as its factorization.

6628449536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12334 (or 12320 counting only the distinct ones).

The product of its digits is 7464960, while the sum is 53.

The square root of 6628449536 is about 81415.2905540476. The cubic root of 6628449536 is about 1878.4687939576.

The spelling of 6628449536 in words is "six billion, six hundred twenty-eight million, four hundred forty-nine thousand, five hundred thirty-six".